
Time-parameter curves
Map Gantt-like schedules directly to geometry components with visual keyframe editing
Read more →Browser-based 4D modeling and spatial simulation for AEC, industrial design, and advanced prototyping—without leaving the web.

A drag-and-drop time-parameter workspace where you attach schedules, animate construction sequences, and lay out simulation timelines directly atop your 3D geometry—no scripting required.
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Map Gantt-like schedules directly to geometry components with visual keyframe editing
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Draft multiple version paths—dry-layups, phasings, failure states—in parallel branches
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Play back changes across site layout, materials, or equipment deployment in real time
Read more →Upload or import models to staged public scenes where teams manipulate shared timelines, mark bottlenecks, and annotate critical moments—like coordinating a structural lift or crowd egress under variable conditions.
See all of Live Simulation Gallery →Collaborate live on construction sequencing with synchronized scrubbing and comments
Tag events—e.g., crane reach limits, pour windows—with precise timestamps
Replay conflict zones, compare sequence variations, and export clips for review
A discipline-filtered library of parametric examples and case studies—lightwell daylight runs in Sydney Town Hall, crowd flow at Place des Vosges, façade installation sequences on King’s Cross Station—each with downloadable timeline specs and solver settings.
See all of Knowledge Vault →Real-world sequence validation from structural fit-outs, demolition phasing, temporary works
Time-based tolerancing, maintenance loops, serviceability windows in product assembly
Open-source templates for flood inundation, solar path overlays, and equipment staging

Embed simulation timelines directly into Revit workflows, pull Rhino parametric components with time-bound parameters, or trigger Unity scenes via REST endpoints—no data translation, version drift, or export dead ends.
See all of API & Integrations Hub →Browse user-submitted public simulations—harbor crane lifts in Port of Rotterdam, stadium evacuation runs on Wembley Plaza, façade rigging on Millennium Bridge—watch full time-lapse playback, export shareable links, or fork and adapt the underlying parameters.
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Fast-forward through complex sequences while maintaining full temporal fidelity
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Copy and modify timelines, parameters, or physics constants under open licenses
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Filter by architectural, civil, or industrial workflows with curated tags
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Isolated environments for high-stakes simulations: version-controlled timeline branches, role-based access for sequence reviews, and audit logs tracking who annotated which phase—and when.
See all of Enterprise Sandbox →Questions or ideas about 4d.io? Send a note and we will get back to you.
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